Greatest Common Divisor (GCD) of 113 and 191
The greatest common divisor (GCD) of 113 and 191 is 1.
What is the Greatest Common Divisor (GCD)?
The GCD of two integers is the largest positive integer that divides both numbers without leaving a remainder. It is useful in simplifying fractions, finding common factors, and in number theory.
How to Calculate the GCD of 113 and 191?
We use the Euclidean algorithm, which involves the following steps:
- Divide the larger number by the smaller number.
- Replace the larger number with the smaller number and the smaller number with the remainder from the division.
- Repeat this process until the remainder is zero.
- The non-zero remainder just before zero is the GCD.
Step-by-Step Euclidean Algorithm
| Step | Calculation |
|---|---|
| 1 | 113 ÷ 191 = 0 remainder 113 |
| 2 | 191 ÷ 113 = 1 remainder 78 |
| 3 | 113 ÷ 78 = 1 remainder 35 |
| 4 | 78 ÷ 35 = 2 remainder 8 |
| 5 | 35 ÷ 8 = 4 remainder 3 |
| 6 | 8 ÷ 3 = 2 remainder 2 |
| 7 | 3 ÷ 2 = 1 remainder 1 |
| 8 | 2 ÷ 1 = 2 remainder 0 |
Examples of GCD Calculations
| Numbers | GCD |
|---|---|
| 118 and 95 | 1 |
| 136 and 86 | 2 |
| 85 and 51 | 17 |
| 177 and 127 | 1 |
| 171 and 101 | 1 |